Shock absorber and vehicle

Abstract

A shock absorber and a vehicle. The shock absorber comprises a first connecting seat (10), a compression regulating valve (101), a rebound regulating valve (102) and an oil replenishment system; the first connecting seat (10) is provided with a first mounting cavity (11) and a second mounting cavity (12), the compression regulating valve (101) being arranged in the first mounting cavity (11), and the rebound regulating valve (102) being arranged in the second mounting cavity (12); one end of the oil replenishment system is connected to the first connecting seat (10); a first communication passage is provided between the rebound regulating valve (102) and the compression regulating valve (101); a second communication passage is provided between the oil replenishment system and the rebound regulating valve (102); a third communication passage is provided between the oil replenishment system and the compression regulating valve (101); oil can circulate among the oil replenishment system, the compression regulating valve (101) and the rebound regulating valve (102) by means of the first communication passage, the second communication passage and the third communication passage. The shock absorber has a large adjustment space, is conveniently to maintain, and can effectively improve the convenience in use.

Description

Shock absorber and vehicle Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a shock absorber and a vehicle. Background Art

[0002] With the improvement of people's quality of life, vehicles, as important means of transportation, have played an increasingly important role in people's lives. Nitrogen shock absorbers are particularly important components that affect vehicle driving performance. Shock absorbers are often installed on the vehicle chassis, with the base of the shock absorber mounted on the axle toward the tire, and the top connecting seat on the frame facing the front or rear of the vehicle. Conventional shock absorbers include a compression regulating valve and a rebound regulating valve. The rebound regulating valve is installed on the base and the compression regulating valve is installed on the top connecting seat. This installation method of the rebound regulating valve requires tools or manual labor to reach into the narrow space behind the wheel at the axle position to correct and adjust the rebound regulating valve, making it inconvenient to adjust the compression or rebound valve.

[0003] Summary of the Invention

[0004] In order to solve the technical problem of inconvenient adjustment of the compression regulating valve and rebound regulating valve in the shock absorber, the main purpose of the present invention is to provide a shock absorber and a vehicle that can increase the adjustment space and facilitate the adjustment of the compression regulating valve and the rebound regulating valve.

[0005] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical solutions:

[0006] According to one aspect of the present invention, there is provided a vibration damper comprising:

[0007] The first connecting seat includes a first mounting cavity and a second mounting cavity;

[0008] A compression regulating valve is arranged in the first installation cavity;

[0009] a rebound regulating valve, disposed in the second mounting cavity, with a first communication channel being defined between the compression regulating valve and the rebound regulating valve;

[0010] An oil replenishing system has one end connected to the first connecting seat, a second communicating channel is defined between the oil replenishing system and the rebound regulating valve, and a third communicating channel is defined between the oil replenishing system and the compression regulating valve, and oil circulates among the oil replenishing system, the compression regulating valve, and the rebound regulating valve through the first communicating channel, the second communicating channel, and the third communicating channel.

[0011] According to one embodiment of the present invention, the shock absorber further includes a second connecting seat, and the other end of the oil replenishing system is connected to the second connecting seat.

[0012] According to one embodiment of the present invention, the oil replenishment system comprises:

[0013] An oil storage cylinder group, the oil storage cylinder group comprising a first cavity and a second cavity, and oil is stored in the oil storage cylinder group;

[0014] The air cylinder system includes a first air cylinder group and a second air cylinder group. The first air cylinder group, the rebound regulating valve and the second cavity are fluidly connected via the second communicating channel. The second air cylinder group, the compression regulating valve and the first cavity are fluidly connected via the third communicating channel.

[0015] According to one embodiment of the present invention, the oil reservoir assembly includes a first oil reservoir and a second oil reservoir, the second oil reservoir is sleeved inside the first oil reservoir, a first gap cavity and a first oil passage are defined between the first and second oil reservoirs, the first cavity and the second cavity form an inner cavity of the second oil reservoir, and the first gap cavity is in fluid communication with the second cavity via the first oil passage.

[0016] The first air cylinder assembly is in fluid communication with the rebound regulating valve via a second oil passage, the rebound regulating valve is in fluid communication with the first gap cavity via a third oil passage, and the second oil passage, the third oil passage, the first gap cavity, and the first oil passage form a second communicating passage;

[0017] A fourth oil passage is provided between the first cavity and the compression regulating valve, and a fifth oil passage is provided between the compression regulating valve and the second air cylinder assembly. The fourth oil passage and the fifth oil passage form the third connecting passage.

[0018] According to an embodiment of the present invention, the first gas cylinder group and the second gas cylinder group are respectively arranged on both sides of the oil storage cylinder group.

[0019] According to one embodiment of the present invention, the first oil passage is an oil hole opened on the side wall of the second oil storage cylinder, and the second oil passage, the third oil passage, the fourth oil passage and the fifth oil passage are all opened in the first connecting seat.

[0020] According to one embodiment of the present invention, the oil replenishing system further includes a piston valve system and a piston rod, wherein the piston valve system is assembled on one end of the piston rod, and the other end of the piston rod is assembled on the second connecting seat, and the piston rod drives the piston valve system to push the oil in the second oil reservoir to circulate between the first cavity and the second cavity.

[0021] According to one embodiment of the present invention, the first gas cylinder assembly and the second gas cylinder assembly are both nitrogen gas cylinders, and the volume of the liquid storage chamber of the first gas cylinder assembly is smaller than the volume of the liquid storage chamber of the second gas cylinder assembly.

[0022] According to one embodiment of the present invention, the first mounting cavity, the second mounting cavity and the second gas cylinder group are all arranged on the same side of the first connecting seat, and along the direction from the first connecting seat to the second connecting seat, the first mounting cavity is arranged between the second mounting cavity and the second gas cylinder group.

[0023] According to another aspect of the present invention, a vehicle is provided, comprising a vehicle frame and the above-mentioned shock absorber, wherein the vehicle frame is connected to the first connecting seat.

[0024] As can be seen from the above technical solution, the advantages and positive effects of the shock absorber and vehicle of the present invention are:

[0025] The shock absorber includes a first connecting seat, a compression regulating valve, a rebound regulating valve, and an oil replenishment system. The first connecting seat is provided with a first mounting cavity and a second mounting cavity. The compression regulating valve is disposed in the first mounting cavity, and the rebound regulating valve is disposed in the second mounting cavity. One end of the oil replenishment system is connected to the first connecting seat. A first communication channel is defined between the rebound regulating valve and the compression regulating valve, a second communication channel is defined between the oil replenishment system and the rebound regulating valve, and a third communication channel is defined between the oil replenishment system and the compression regulating valve. Oil circulates among the oil replenishment system, the compression regulating valve, and the rebound regulating valve through the first, second, and third communication channels. This allows the rebound regulating valve and the compression regulating valve to be located on the same connecting seat, increasing adjustment and correction space and facilitating correction of the rebound and compression regulating valves. Furthermore, due to the small distance between the rebound regulating valve and the compression regulating valve, oil can be quickly replenished through the first, second, and third communication channels, thereby improving the overall response speed of the shock absorber and enhancing the reliability of the shock absorber's overall performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0028] FIG1 is a schematic diagram of the overall three-dimensional structure of a shock absorber provided by an embodiment of the present invention;

[0029] FIG2 is a schematic diagram of the internal cross-sectional structure of a shock absorber provided by an embodiment of the present invention;

[0030] FIG3 is a partially enlarged structural diagram of an internal cross-section of a vibration absorber provided by an embodiment of the present invention;

[0031] FIG4 is a flow diagram of an oil replenishment process during compression of a shock absorber provided by an embodiment of the present invention;

[0032] FIG5 is a flow diagram of an oil replenishment process during rebound recovery of a shock absorber provided by an embodiment of the present invention;

[0033] FIG6 is a graph showing a rebound adjustment force value curve in the prior art (the upper semicircle is a rebound force value curve);

[0034] FIG7 is a rebound adjustment force value curve diagram of the present invention (the upper semicircle is the rebound force value curve).

[0035] Among them: 10. First connecting seat; 11. First installation cavity; 12. Second installation cavity; 13. Second oil passage; 14. Third oil passage; 15. Fourth oil passage; 16. Fifth oil passage; 20. Second connecting seat; 30. Oil storage cylinder group; 31. First oil storage cylinder; 32. Second oil storage cylinder; 321. First cavity; 322. Second cavity; 33. First clearance cavity; 34. First oil passage; 40. Air cylinder system; 41. First air cylinder group; 42. Second air cylinder group; 50. Piston valve system; 51. Through hole; 60. Piston rod; 101. Compression regulating valve; 102. Rebound regulating valve. DETAILED DESCRIPTION

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0037] With the improvement of people's quality of life, vehicles, as important means of transportation, have played an increasingly important role in people's lives. Nitrogen shock absorbers are particularly important components that affect vehicle driving performance. Shock absorbers are often installed on the vehicle chassis, with the base of the shock absorber mounted on the axle toward the tire, and the top connecting seat on the frame facing the front or rear of the vehicle. Conventional shock absorbers include a compression regulating valve and a rebound regulating valve. The rebound regulating valve is installed on the base and the compression regulating valve is installed on the top connecting seat. This installation method of the rebound regulating valve requires tools or manual labor to reach into the narrow space behind the wheel at the axle position to correct and adjust the rebound regulating valve, making it inconvenient to adjust the compression or rebound valve.

[0038] In order to solve the technical problem of inconvenience in adjusting the compression regulating valve and rebound regulating valve in the shock absorber, the main purpose of the present invention is to provide a shock absorber and a vehicle that can increase the adjustment space and facilitate the adjustment of the compression regulating valve and the rebound regulating valve, wherein the shock absorber includes a first connecting seat 10, a compression regulating valve, a rebound regulating valve and an oil replenishing system, a first mounting cavity 11 and a second mounting cavity 12 are provided on the first connecting seat 10, the compression regulating valve is arranged in the first mounting cavity 11, and the rebound regulating valve is arranged in the second mounting cavity 12, one end of the oil replenishing system is connected to the first connecting seat 10, a first connecting channel is provided between the rebound regulating valve and the compression regulating valve, a second connecting channel is provided between the oil replenishing system and the rebound regulating valve, and a third connecting channel is provided between the oil replenishing system and the compression regulating valve, and the oil can circulate between the oil replenishing system, the compression regulating valve and the rebound regulating valve through the first connecting channel, the second connecting channel and the third connecting channel.

[0039] Referring to Figures 1 to 5, the rebound regulating valve and the compression regulating valve can be placed on the same connecting seat, thereby increasing the space for adjustment and correction, and facilitating correction and adjustment of the rebound regulating valve and the compression regulating valve. In addition, since the interval between the rebound regulating valve and the compression regulating valve is small, the oil can be quickly replenished through the first connecting channel, the second connecting channel and the third connecting channel, thereby improving the response speed of the overall shock absorber and the reliability of the overall performance of the shock absorber.

[0040] As an example, in actual use, the first connecting seat 10 can be used as the top connecting seat and installed toward the side of the frame at the front or rear of the vehicle. When the user needs to adjust the compression regulating valve and the rebound regulating valve, there is a larger operating space, which is convenient for maintenance of the shock absorber.

[0041] According to one embodiment of the present invention, the shock absorber further includes a second connecting base 20. The other end of the oil replenishment system is connected to the second connecting base 20, and the first connecting base 10 and the second connecting base 20 respectively face the ends of the oil replenishment system. One end of the oil replenishment system is connected to the first connecting base 10, and the other end is connected to the second connecting base 20. The second connecting base 20 can be configured as a base for the shock absorber, so that the second connecting base 20 is installed on the axle facing the wheel. The first connecting base 10 and the second connecting base 20 are used to mount the shock absorber in a suitable position, further improving the stability of the shock absorber during installation.

[0042] On the other hand, the oil replenishing system has a certain extension length, and the oil replenishing system includes a piston assembly. The length between the first connecting seat 10 and the second connecting seat 20 meets the use requirements of the piston assembly. The piston assembly is used to provide driving force to the oil so that the oil circulates in the first connecting channel, the second connecting channel and the third connecting channel.

[0043] Furthermore, one end of the piston assembly can be connected to the first connecting seat 10, and the other end can be connected to the second connecting seat 20. The piston assembly can circulate the oil in the connecting channel between the oil replenishing system, the compression regulating valve, and the rebound regulating valve through piston movement.

[0044] During a compression recovery process, the oil switches with the piston movement of the piston assembly between the first connecting seat 10 and the second connecting seat 20. In this embodiment, the piston assembly can be set to move toward the first connecting seat 10 as a compression process, and the piston assembly can be set to move toward the second connecting seat 20 as a rebound recovery process. As the piston assembly moves between the first connecting seat 10 and the second connecting seat 20, the shock absorber switches between the compression and rebound recovery processes, thereby achieving the purpose of shock absorption.

[0045] As an example, during the compression process, the piston assembly squeezes the oil from the second connecting seat 20 to the first connecting seat 10 in the direction of the first connecting seat 10, and a part of the oil is squeezed into the compression regulating valve through the third connecting channel. After the oil is adjusted by the compression regulating valve, it is recycled to the oil replenishing system for storage, and the other part of the oil is used to compensate the piston assembly. As the piston assembly drives the oil toward the first connecting seat 10, the oil originally stored in the oil replenishing system flows into the rebound regulating valve through the second connecting channel. After adjustment by the rebound regulating valve, the oil continues to compensate the piston assembly.

[0046] During the rebound recovery process, the piston assembly moves toward the second connecting seat 20 and squeezes a portion of the oil to flow through the second connecting channel to the rebound regulating valve. After being regulated by the rebound regulating valve, the oil returns to the oil replenishing system for storage; the other portion of the oil compensates the piston assembly. At the same time, the oil stored in the oil replenishing system during the compression process returns to the piston assembly through the third connecting channel to participate in the next compression process.

[0047] According to one embodiment of the present invention, the oil replenishment system includes an oil reservoir group 30 and an air cylinder system 40, wherein the oil reservoir group 30 includes a first cavity 321 and a second cavity 322, and oil is stored in the oil reservoir group 30. The air cylinder system 40 includes a first air cylinder group 41 and a second air cylinder group 42. The first air cylinder group 41, the rebound regulating valve, and the second cavity 322 are fluidically connected via a second connecting channel, and the second air cylinder group 42, the compression regulating valve, and the first cavity 321 are fluidically connected via a third connecting channel.

[0048] The piston assembly can drive the oil to pass through the oil reservoir group 30 and the air cylinder system 40 after being adjusted by the compression regulating valve and the rebound regulating valve. The first air cylinder group 41 in the air cylinder system 40 is used as the liquid storage component of the oil replenishing system during the rebound process, and the second air cylinder group 42 is used as the liquid storage component of the oil replenishing system during the compression process. Then, the two air cylinder groups are used to store oil for the rebound recovery process and the compression process respectively to improve the oil replenishment efficiency. The first cavity 321 of the oil reservoir group 30 is used as the oil storage area of ​​the piston assembly after adjustment by the compression regulating valve during the compression process, and the second cavity 322 is used as the oil storage area of ​​the piston assembly after adjustment by the compression regulating valve during the rebound recovery process. As the piston of the piston assembly moves, when vibration occurs between the first connecting seat 10 and the second connecting seat 20 due to the frame and the axle, the shock absorber switches between the compression process and the rebound recovery process to reduce the shock of the vehicle.

[0049] Furthermore, the first gas cylinder group 41 and the second gas cylinder group 42 can both be configured as nitrogen gas cylinders.

[0050] Furthermore, an oil hole can be provided on the piston assembly, through which the first cavity 321 and the second cavity 322 are connected, thereby replenishing oil to the second cavity 322 during the compression process of the piston assembly, or replenishing oil to the first cavity 321 during the rebound recovery process, so as to compensate the piston assembly, improve the oil replenishment efficiency of the overall shock absorber, and thereby improve the response efficiency of the shock absorber.

[0051] According to one embodiment of the present invention, the oil reservoir group 30 includes a first oil reservoir 31 and a second oil reservoir 32. The second oil reservoir 32 is sleeved on the inner side of the first oil reservoir 31. A first gap cavity 33 and a first oil passage 34 are provided between the first oil reservoir 31 and the second oil reservoir 32. The first cavity 321 and the second cavity 322 form the inner cavity of the second oil reservoir 32. The first gap cavity 33 is in fluid communication with the second cavity 322 through the first oil passage 34. The piston assembly can be arranged in the second oil reservoir 32, and the piston assembly performs piston motion in the second oil reservoir 32. The inner cavity of the second oil reservoir 32 can be divided into the first cavity 321 and the second cavity 322 by the piston assembly. and the second cavity 322, so that the first cavity 321 faces the first connecting seat 10, and the second cavity 322 faces the second connecting seat 20. The inner diameter of the first oil reservoir 31 is larger than the inner diameter of the second oil reservoir 32, thereby forming a first gap cavity 33 between the first oil reservoir 31 and the second oil reservoir 32. The first oil passage 34 can connect the first oil reservoir 31 and the second oil reservoir 32. As an example, the first oil passage 34 can be set as two oil holes, and the two oil holes are respectively set on the first oil reservoir 31 and the second oil reservoir 32. The inner cavity of the first oil reservoir 31 is connected to the inner cavity of the second oil reservoir 32 through the two oil holes, thereby building an oil replenishment circulation path;

[0052] The first air cylinder group 41 is in fluid communication with the rebound regulating valve via the second oil passage 13, and the rebound regulating valve is in fluid communication with the first clearance cavity 33 via the third oil passage 14. The second oil passage 13, the third oil passage 14, the first clearance cavity 33, and the first oil passage 34 form a second communicating passage. A fourth oil passage 15 is provided between the first cavity 321 and the compression regulating valve, and a fifth oil passage 16 is provided between the compression regulating valve and the second air cylinder group 42. The fourth oil passage 15 and the fifth oil passage 16 form a third communicating passage.

[0053] The second oil passage 13, the third oil passage 14, the fourth oil passage 15, and the fifth oil passage 16 can all be configured as oil holes provided on the first connecting base 10 to facilitate oil flow. Furthermore, since the first connecting base 10 faces the vehicle frame, the inner diameters of the second oil passage 13, the third oil passage 14, the fourth oil passage 15, and the fifth oil passage 16 can be increased, thereby increasing the inner diameter of the overall oil supply flow path.

[0054] The rebound regulating valve has two valve ports, one of which is connected to the second oil passage 13 and the other is connected to the third oil passage 14. The compression regulating valve also has at least two valve ports, one of which is connected to the fourth oil passage 15 and the other is connected to the fifth oil passage 16. By adjusting the oil passage areas of the rebound regulating valve and the compression regulating valve, the overall oil passage area can be further increased and the lost motion can be reduced.

[0055] As an example, the oil passing area of ​​a single oil passing hole of the valve core of the rebound regulating valve and / or the compression regulating valve can be set to 10.78 mm 2 , so that the maximum oil flow area of ​​the overall rebound regulating valve or compression regulating valve can reach 43.152mm 2 .

[0056] In combination with the above, referring to Figures 6 and 7, the curve diagram illustrates: the vertical axis is the force value, unit: N, where a positive value of N is the rebound force value, and a negative value of N is the compression force value; the horizontal axis is the displacement, unit: mm. It can be clearly seen from the curve diagrams of Figures 6 and 7 that compared with the prior art, the force value curve of the rebound recovery process of the present invention is smoother and fuller than the curve of the prior art, and the idle stroke is significantly reduced.

[0057] Therefore, by adopting a dual oil reservoir and dual nitrogen cylinder structure, oil is replenished in the compression and rebound processes respectively, making the oil replenishment faster, the shock absorber response faster, the shock absorber force value test curve fuller, and it is less likely to produce lost motion during high-speed operation.

[0058] In addition, since the rebound regulating valve is integrated into the upper seat, compared with the existing technology, the oil flow area can be increased more flexibly while ensuring the convenience of adjustment, so that the rebound recovery adjustment has a larger adjustment range, is more adaptable to complex and harsh road conditions, and the overall performance of the shock absorber is further improved.

[0059] According to one embodiment of the present invention, the first gas cylinder assembly 41 and the second gas cylinder assembly 42 are respectively arranged on both sides of the oil reservoir assembly 30. By rationally planning the installation space, the volume of the second gas cylinder assembly 42 can be made larger than the volume of the first gas cylinder assembly 41, so as to more flexibly adjust the assembly position.

[0060] According to one embodiment of the present invention, the first oil passage 34 is an oil hole opened on the side wall of the second oil storage cylinder 32 , which can face the first cavity 321 to achieve liquid communication with the first cavity 321 .

[0061] According to one embodiment of the present invention, the oil replenishment system further includes a piston valve system 50 and a piston rod 60. The piston valve system 50 is mounted on one end of the piston rod 60, the other end of which is mounted on the second connecting seat 20. The piston rod 60 drives the piston valve within the second oil reservoir 32 to circulate oil between the first cavity 321 and the second cavity 322. The piston valve system 50 is configured to perform piston motion between the first cavity 321 and the second cavity 322. A through hole 51 is defined in the piston valve system 50, establishing communication between the first cavity 321 and the second cavity 322. This through hole 51 further improves the efficiency of the oil replenishment circulation.

[0062] According to one embodiment of the present invention, the first mounting cavity 11, the second mounting cavity 12, and the second gas cylinder assembly 42 are all arranged on the same side of the first connecting seat 10. Along the direction from the first connecting seat 10 to the second connecting seat 20, the first mounting cavity 11 is arranged between the second mounting cavity 12 and the second gas cylinder assembly 42. As an example, the first mounting cavity 11 and the second mounting cavity 12 can be arranged on the first side of the first connecting seat 10, so that the second gas cylinder assembly 42 is threadedly connected to the first connecting seat 10 on the first side, thereby providing a more stable installation position for the larger volume second gas cylinder assembly 42, and threading the smaller volume first gas cylinder assembly 41 on the second side of the first connecting seat 10, thereby reducing the occupied volume of the second side of the first connecting seat 10 and adapting to more different usage scenarios.

[0063] In one embodiment, the present invention comprises an upper connected seat (equivalent to the first connecting seat 10), an inner oil reservoir (equivalent to the second oil reservoir 32), an outer oil reservoir (equivalent to the first oil reservoir 31), a large nitrogen cylinder (equivalent to the second cylinder group 42), the large nitrogen cylinder including a large floating piston and a large valve cap arranged therein, a small nitrogen cylinder (equivalent to the first cylinder group 41), and a small floating piston and a small valve cap arranged therein; a piston rod, a piston valve system 50, a lower connecting seat (equivalent to the second connecting seat 20), a buffer block, a compression regulating valve, a rebound regulating valve and a sealing assembly. The sealing assembly is used to seal the bottom of the inner oil reservoir and the outer oil reservoir, and the piston rod is sealed with the inner oil reservoir and the outer oil reservoir through the sealing assembly.

[0064] The outer oil reservoir is connected to the upper joint seat and sealing assembly via threads, while the inner oil reservoir is connected to the upper joint seat and sealing assembly via a step limiter. The top of the piston rod passes through the sealing assembly and connects to the piston valve system 50 inside the shock absorber; the bottom of the piston rod is connected to the lower connecting seat. The buffer block is located on the piston rod outside the shock absorber, allowing the piston rod to slide freely. The large and small nitrogen cylinders are connected to the upper joint seat via threads. The nitrogen cylinders are equipped with large and small floating pistons, respectively. The tail of the nitrogen cylinders is equipped with large and small valve caps, respectively, and they are limited by retaining rings. The compression and rebound adjustment functions are connected to the upper joint seat via threads.

[0065] Six oil holes are located at the bottom of the inner reservoir, connecting its inner cavity with the first clearance cavity (outer cavity) between the inner and outer reservoirs. Oil hole 1 (equivalent to fourth oil passage 15) is located between the first cavity (upper portion) of the inner reservoir and the rear end of the compression regulating valve. Oil hole 2 (equivalent to fifth oil passage 16) is located between the large nitrogen cylinder and the middle portion of the compression regulating valve. Oil hole 3 (equivalent to third oil passage 14) is located between the first clearance cavity and the rear end of the rebound regulating valve. Oil hole 4 (equivalent to second oil passage 13) is located between the small nitrogen cylinder and the middle portion of the rebound regulating valve. An oil hole (equivalent to the first connecting passage) is located between the compression regulating valve and the rebound regulating valve.

[0066] In combination with the above, the working principle of the shock absorber of the present invention is as follows:

[0067] When the shock absorber is in the compression working state, the piston valve system 50 and the piston rod move toward the upper connected seat. At this time, the piston pushes the oil from the inner cavity through the oil hole 1 into the compression regulating valve. After being adjusted by the oil hole of the compression regulating valve, it enters the large nitrogen cylinder through the oil hole 2. At the same time, a portion of the oil passes through the compression oil hole of the piston valve system 50 to compensate for the space between the compression piston valve system 50 and the sealing assembly. The oil in the small nitrogen cylinder passes through the oil hole 4, the one-way oil hole of the rebound regulating valve, and then enters the outer cavity through the oil hole 3. The oil in the outer cavity passes through the small hole at the bottom of the inner cylinder to replenish the space between the piston valve system 50 and the sealing assembly.

[0068] When the shock absorber is in the recovery operating state, the piston valve system 50 and the piston rod move toward the lower connecting seat. At this time, the piston pushes oil from the second cavity 322 (lower) through the small hole at the bottom of the inner cylinder and into the first clearance cavity 33. The oil in the first clearance cavity 33 passes through the oil hole 3 and enters the rebound regulating valve. After being regulated by the oil hole of the rebound regulating valve, it enters the small nitrogen cylinder through the oil hole 4. At the same time, a portion of the oil passes through the rebound oil hole of the piston valve system 50 to compensate for the space between the piston valve system 50 and the upper connecting seat. The oil in the large nitrogen cylinder passes through the oil hole 2, the one-way oil hole of the compression regulating valve, and then enters the first cavity 321 (upper) through the oil hole 1 to replenish the space between the piston valve system 50 and the upper connecting seat.

[0069] According to another aspect of the present invention, a vehicle is provided, comprising a vehicle frame and the aforementioned shock absorber, wherein the vehicle frame is connected to a first connecting seat 10. The first connecting seat 10 serves as the top connecting seat, and since both the compression regulating valve and the rebound regulating valve are disposed on the first connecting seat 10, a larger operating space is provided for later maintenance, facilitating later adjustment of the compression regulating valve and / or the rebound regulating valve. Furthermore, since the installation space for the rebound regulating valve is larger, a dedicated regulating valve with a larger oil flow area can be selected, further improving oil replenishment efficiency. With the structure of dual oil reservoirs and dual nitrogen cylinders, the shock absorber can respond faster, the shock absorber force value test curve is fuller, and during high-speed operation, lost travel is less likely to occur, thereby improving the shock absorption effect during vehicle driving.

[0070] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0071] The foregoing is merely a detailed description of the present invention, intended to enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is to be construed in the widest manner consistent with the principles and novel features claimed herein.

Claims

1. A shock absorber, characterized in that: include: A first connecting seat (10) comprising a first mounting cavity (11) and a second mounting cavity (12); A compression regulating valve, arranged in the first installation cavity (11); A rebound regulating valve is arranged in the second installation cavity (12), and a first communication channel is provided between the compression regulating valve and the rebound regulating valve; An oil replenishing system has one end connected to the first connecting seat (10), a second connecting passage is provided between the oil replenishing system and the rebound regulating valve, and a third connecting passage is provided between the oil replenishing system and the compression regulating valve, and oil circulates among the oil replenishing system, the compression regulating valve, and the rebound regulating valve through the first connecting passage, the second connecting passage, and the third connecting passage.

2. The shock absorber according to claim 1, characterized in that The shock absorber further comprises a second connecting seat (20), and the other end of the oil replenishing system is connected to the second connecting seat (20).

3. The shock absorber according to claim 2, characterized in that The oil replenishment system comprises: An oil storage cylinder group (30), the oil storage cylinder group (30) comprising a first cavity (321) and a second cavity (322), and oil is stored in the oil storage cylinder group (30); The air cylinder system (40) comprises a first air cylinder group (41) and a second air cylinder group (42), wherein the first air cylinder group (41), the rebound regulating valve and the second cavity (322) are fluidly connected via the second connecting channel, and the second air cylinder group (42), the compression regulating valve and the first cavity (321) are fluidly connected via the third connecting channel.

4. The shock absorber according to claim 3, characterized in that The oil storage cylinder group (30) comprises a first oil storage cylinder (31) and a second oil storage cylinder (32); the second oil storage cylinder (32) is sleeved inside the first oil storage cylinder (31); a first gap cavity (33) and a first oil passage (34) are provided between the first oil storage cylinder (31) and the second oil storage cylinder (32); the first cavity (321) and the second cavity (322) form an inner cavity of the second oil storage cylinder (32); the first gap cavity (33) is in fluid communication with the second cavity (322) via the first oil passage (34); The first air cylinder group (41) is in fluid communication with the rebound regulating valve via a second oil passage (13), the rebound regulating valve is in fluid communication with the first gap cavity (33) via a third oil passage (14), and the second oil passage (13), the third oil passage (14), the first gap cavity (33) and the first oil passage (34) form the second communication passage; A fourth oil passage (15) is provided between the first cavity (321) and the compression regulating valve, and a fifth oil passage (16) is provided between the compression regulating valve and the second air cylinder assembly (42); the fourth oil passage (15) and the fifth oil passage (16) form the third connecting passage.

5. The shock absorber according to claim 3, characterized in that The first gas cylinder group (41) and the second gas cylinder group (42) are respectively arranged on two sides of the oil storage cylinder group (30).

6. The vibration absorber according to claim 4, characterized in that The first oil passage (34) is an oil passage hole opened on the side wall of the second oil storage cylinder (32), and the second oil passage (13), the third oil passage (14), the fourth oil passage (15) and the fifth oil passage (16) are all opened on the first connecting seat (10).

7. The vibration absorber according to claim 4, characterized in that The oil replenishing system further comprises a piston valve system (50) and a piston rod (60). The piston valve system (50) is mounted on one end of the piston rod (60), and the other end of the piston rod (60) is mounted on the second connecting seat (20). The piston rod (60) drives the piston valve system (50) to push the oil in the second oil storage cylinder (32) to circulate between the first cavity (321) and the second cavity (322).

8. The vibration absorber according to claim 3, characterized in that The first gas cylinder group (41) and the second gas cylinder group (42) are both nitrogen gas cylinders, and the volume of the liquid storage chamber of the first gas cylinder group (41) is smaller than the volume of the liquid storage chamber of the second gas cylinder group (42).

9. The vibration absorber according to claim 8, characterized in that The first installation cavity (11), the second installation cavity (12) and the second gas cylinder group (42) are all arranged on the same side of the first connecting seat (10), and along the direction from the first connecting seat (10) to the second connecting seat (20), the first installation cavity (11) is arranged between the second installation cavity (12) and the second gas cylinder group (42).

10. A vehicle, characterized in that: It comprises a vehicle frame and the shock absorber according to any one of claims 1 to 9, wherein the vehicle frame is connected to the first connecting seat (10).

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